Drizly, a mobile app that allows people to order booze to their door using their smartphones, has scored another $2.5 million in funding to fuel its fast-paced expansion.

The money, from a group of investors including Gary Vaynerchuk of Vayner RSE, is on top of a $2.3 million fund-raising round earlier this year, which helped the upstart gain a foothold in New York and Chicago after launching in Boston last year.

Drizly, which started doing business in Manhattan and Brooklyn earlier this year, is moving into the Hamptons over Memorial Day weekend — just in time for backyard BBQ season, The Post has learned.

The coming expansion will also include Los Angeles and two other cities over the next two months — doubling its current operations, CEO Nicholas Rellas told The Post.

“We are moving very quickly,” Rellas said.

The 24-year-old entrepreneur isn’t only the one vying to deliver the most buzz — literally.

Drizly launched in Boston but has since expanded to Manhattan, Brooklyn and Chicago.Drizly

In New York, Drizly already competes with Minibar, which started making to deliveries to Manhattan, Brooklyn and Queens earlier this year.

So far this year, at least five new apps promising to drop off alcohol on-demand at people’s doorsteps have popped up in a move by enterprising business graduates to capitalize on a glaring gap in the home-delivery business.